Question

Define diffusion.

July 13, 2024

Answer

Movement of molecules from a region of higher concentration to a region of lower concentration is called diffusion.

💡 Some Related Questions

Consider the following statements: (𝑎) Ribosomes are the protein factories of the cell. (𝑏) The proteins formed are transported by the Golgi complex to different parts according to their requirements. (𝑐) Mitochondria provide energy for the wörking of the cell. (𝑑) Lysosomes are the suicidal bags where dead and damaged organelles are destroyed. Answer the following questions based on the above information: (𝒊) What would happen if any one of the above mentioned organelles are absent in the cell? (𝒊𝒊) What values shown by the cell organelles can be related to humans? (𝒊𝒊𝒊) Give one situation in your everyday life where such values are exhibited.

Why does the skin of your finger shrink when you wash clothes for a long time?

What are the colours absorbed by plants? The green light of the sunlight is blocked. How will the photosynthesis be affected?

A solution of 3% glucose and a solution of 8% glucose are kept in a trough separated by a semipermeable membrane. What will you observe after 1 hour?

Where will you find more number of ribosomes-in cancer cells or in fat cells?

A person takes concentrated solution of salt, after sometime, he starts vomiting. What is the phenomenon responsible for such situation? Explain.

If cells of onion peel and RBC are separately kept in hypotonic solution, what will happen to each of them? Explain the reason for your answer. (a) Both the cells will swell. (b) RBC will burst easily while cells of onion peel will resist the bursting to some extent. (c) (a) and (b) both are correct. (d) RBC and onion peel cells will behave similarly.

In brief state what happens when: (a) dry apricots are left for sometime in pure water and later transferred to sugar solution? (b) a red blood cell is kept in concentrated saline solution? (c) the plasma membrane of a cell breaks down? (d) rheo leaves are boiled in water first and then a drop of sugar syrup is put on it? (e) golgi apparatus is removed from the cell?

Illustrate only a plant cell as seen under electron microscope. How is it different from animal cell?

What is active transport? Differentiate between active and passive transport.